The Wacker Neuson Relay is a genuine OEM component designed for the E3000, E3000 ES, E2200, E1100, E5000, Pureheat, and CH5000 series hydronic surface heaters and ground heaters. As a direct factory replacement, this relay installs into the electrical control circuit exactly as the original, with no adaptation required to the wiring harness or mounting position. Wacker Neuson genuine OEM parts are manufactured to the same specifications as the components installed at the factory, making the the right choice when restoring your heater to full operating condition. With broad fitment spanning gas, diesel, and oil-burner configurations across multiple E-series models, this single part number covers a wide range of units in the field.
Key Features
- Correct Switching Specifications — Genuine OEM relay rated and wound to Wacker Neuson's exact coil voltage and contact load requirements for E-series heater control circuits.
- Drop-In Electrical Replacement — Connector terminals and mounting footprint match the original relay socket, so the part seats and locks without splicing or rewiring.
- Wide E-Series Fitment — Confirmed fit across E3000, E3000 ES, E2200, E1100, E5000, Pureheat, and CH5000 hydronic surface heaters and ground heaters in gas, diesel, and oil-burner variants.
- Keeps Burner and Pump Sequencing Intact — A correctly functioning relay ensures the burner ignition and circulation pump are energized in the right sequence; a failed relay can cause a no-heat condition or prevent the unit from starting entirely.
- Electrical Safety Compliance — Using the OEM-specified relay preserves the designed overcurrent and switching tolerances in the heater's control circuit, supporting safe operation in temporary heat and concrete curing applications.
A relay is an electrically operated switch that uses a low-current control signal to open or close a higher-current circuit. In hydronic heaters and ground heaters, relays are used in the control board circuit to sequence critical functions — such as energizing the burner, circulation pump, or blower — based on thermostat or controller commands. When a relay fails, the component it controls will either stay permanently off or, in some cases, fail to shut down on command, both of which compromise heating performance and operator safety. Replacing a faulty relay with the correct OEM part restores proper electrical sequencing and gets the heater back to reliable operation.
Part Details
| Part Number | 5000166548 |
|---|---|
| Old Part Number | 0166548 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Relay |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E3000 Hydronic Surface Heater with generator | E3000 | 5000620219, 5000620679, 5000620158, 5000620678, 5200004952, 5100017807, 5200014677, 5100017809, 5200014678, 5200014679, 5200014720, 5100017806, 5100017808, 5200014721, 5100017810, 5100017811, 5100025046, 5100017801, 5100055568, 5100056441, 5100025045, 5100056440 |
| E2200 GROUND HEATER, W/ LIFT BAIL | E2200 | 5000620215, 5000620176, 5000620216, 5000620226, 5100017448, 5100017449 |
| E5000 GROUND HEATER, W/GAS BURNER | E5000 | 5000620898, 5000620897, 5000620899 |
| Pureheat Hydronic Heater, Oil Burner | Pureheat | 5000620245, 5000620246, 5000620190 |
| E1100 GROUND HEATER | E1100 | 5000620172, 5000620244, 5200001676 |
| E3000 ES Hydronic Surface Heater | E3000ES | 5000620968, 5000620967 |
| Cross Heater with oil burner | CH5000 | 5000620240, 5000620242 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
